High-frequency link-type dc/ac converter for ups with a new voltage clamper
High-frequency link-type dc/ac converter for ups with a new voltage clamper
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具有新型电压钳位器的 UPS 高频链接型 DC/AC 转换器
DOI：
10.1002/eej.4391130312
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发表时间：
1993
影响因子：
0.4
通讯作者：
H. Amano
中科院分区：
文献类型：
--
作者：
N. Tokunaga;I. Yamato;Matsuda Yasuo;H. Amano
本文提出了一种新型的高频DC/AC变换器的灵活，紧凑和高效的不间断电源（UPS）系统的开发。提出的DC/AC变换器由一个高频逆变器，一个高频Transformer和一个循环变换器与一个新的电压钳位。该循环换流器能够通过源换流和自换流（通过关断开关装置进行换流）来操作。因此，根据考虑和整流电抗引起的内部电压降，在两种整流方法之间进行选择，可以实现紧凑高效的UPS。电压箝位器有效地降低了转换系统的功率损耗。介绍了一种10 kVA高频链型DC/AC变换器的制作方法，并证明了其降低损耗的效果。
This paper proposes a new type of high-frequency dc/ac converter developed for flexible, compact and high-efficiency uninterruptible power supply (UPS) systems. The proposed dc/ac converter consists of a high-frequency inverter, a high-frequency transformer and a cycloconverter with a new voltage clamper. This cycloconverter is capable of being operated by both source-commutation and self-commutation (commutation by turning off the switching device). Consequently, by choosing between the two commutating methods, based on consideration and the internal voltage drop caused by commutating reactance, a compact and efficient UPS can be realized. The voltage clamper effectively reduces power loss of the conversion system. Fabrication of a 10-kVA high-frequency link-type dc/ac converter is described and its loss reduction effect is demonstrated.